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I just picked up an EX coupe yesterday, and I like everything but the ugly seat fabric, and the road noise. Have any of you undercoated or otherwise soundproofed a civic? If so, how, and what were the results?

Thanks!

 
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Turn the radio up [IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]

 
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Yep A bigger stereo does the trick for me.
Some people have done some stuff like that on here and have good results with it.

 
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DIY Car-Insulator:

1. Sit in a '91 Civic DX Hatchback.
2. Drive for an hour or two through pothole covered roads.
3. Get back in the your Civic and drive home HAPPILY and QUIETLY!

Just kidding!

Seriously, if you are looking for sound insulation, most people will tell you to go with Dynamat...I am not going to tell you that. There is a new product out called CASCADE. which is a Linoleum sound insulator, (the same stuff used on airplanes). Dynamat is asphalt based, so it stinks, and it eventually deteriorates. CASCADE doesn't stink, It costs less than Dynamat, and it takes significantly longer to detereorate, (20 years or so). You can find some @ MMXpress Wholesale Audio. I've heard that if you line the entire inside of your car with CASCADE, the ride is virtually silent. Hope that helps a little. [IMG]i/expressions/face-icon-small-cool.gif[/IMG]

(Forgot to mention it weighs a whole lot less than Dynamat too! VTEC POWER!!!)

 
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Cascade is not a new product line, it's been around almost as long as Dynamat. Basically both products are simply damping mats that add mass to the area in which they are applied to reduce vibrations/resonances. They are not really sound-proofing products. Another product, RAAMmat, does the same thing and costs much less than either Dynamat or Cascade. Go to the I.C.E. forum and do a search on RAAMmat, you will find plenty of information there about all these products.

 
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Yep. Brown Bread is another one. I've done some insulation using this stuff called Pergo Silent Step. I bought 100+ square feet for $65. It's hard to apply and I only use it on the underside of all of the plastic panels. I use 3M spray adhesive, but any spray adhesive should work. Rubber cement doesn't work. I cut out little pieces to fit the little segregated compartments on the underside of the plastic panels. I have only done a small amount so far, but already notice an improvement. I will use RAAMmat on the metal panels later on. Then I will spray the underside of the car with that thick black stuff. Haven't researched this stuff yet, so I don't know what it is. These three things should help out a lot.

 
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stormguard is yet another alternative, they all work just fine! as long as they stay affixed to what you roll it onto, that is [IMG]i/expressions/face-icon-small-wink.gif[/IMG]

alright, for eliminating road noise, you have at least three major sources:

doors
floor
wheel wells

doors and floor are easy enough, just apply the deadening material to the metal skin and roll flat. a heat gun helps alot, and if you are using anything besides dynamat extreme, is really neccesary. if you go teh cheap route and buy stormgaurd ($60 for enough material to do 2-3 cars, like 200 sq feet) then a blowtorch is neccesary, as even a heatgun will not get it to adhere properly.

anywhere you find metal close to metal, (trunk lid and outer skin under your side panels) spray expanding foam sparingly. expanding foam is by far teh best deadening tool you have!

now when you do the floor, of course you have to take apart your interior basicaly completely, and dont forget to do your trunk floor! it sounds silly, and only is a factor when you have the seats folded down (pretty much) it absolutely IS a source of road noise while driving around! (at least it is in my car)

now that you have done yoru floor and doors with one or more layers of deadener (wasnt pulling the carpet up a b i t c h? I bet not as bad as it was to reinstall it >[IMG]i/expressions/face-icon-small-wink.gif[/IMG] ) its time to do your wheelwells. You will need spray on undercoating, you can get it anywhere, even walmart.

the best way is to take off your wheel completely, cover the hardware with newspaper before you go to work. is really the best way to ensure that you have complete coverage. follow prep directions on yoru can, and go to work.

like with matting, an uneven surface results in the best resonance protection. so spray like a 7 year old who got his hands on a can of silly string, but be sure to get every spot. wheelwells are a magor source of roadnoise!


simple! now you put your wheels back on, let eveything set up all nice and solid (be sure to do this on a HOT day, so the metal of the car is hot and ready to adhere to your dampening material) and enjoy your roadnoise-killed civic!

if you still have some problems, undercoating underneath i am told can help, but i have no knowledge or experience with that one.

and ill try to find teh link with the wheel well tutorial, its very complete, and has great pics (not very informative tho, was not written by a 10 year old audiophile or anything)

 
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got my car undercoated the day I got it...
got my front doors & front floors deadened with mats and acoustifoam for my sound system..it helps alot!!
I now have to deaden my rear floor and trunk coz you can hear the road noise from the back! but if your infront...its really quiet